Mining machine



July 2, 1935. F, A. LINDGREN MINING MACHINE Filed Nov. 18, 1933 5Sheets-Sheet l July 2, 1935. A UNDGREN 2,006,399

MINING MACHINE Filed Nov. 18, 1935 5 Sheets-Sheet 2 AHifi Patented Julyv2, 1935 l'MINING :MAcniNE Frank A.. Lindgren,WesternfSprings,Ill.,assignor to 'Goodman Manufae tu`ri`ng i Company,Chi

cago, Ill., a corporation of Illinois `Application November18:11933,ISerial Noif6985599 6` Claims.

This invention relates to improvements in .mining machines. and Imore'particularly to. mining machines of .the track mounted type adapted; inparticular, to cut arcuate kerfs in entriesornarf 5 :row rooms .abovethe level ofthe. mine bottom, and'A has among otherobjectsto vprovide anew ,and Aimproved mining-machine of the class. de- .:scribedconstructed with a view towards, compactness and efficiency. of design,utmost efficiency `and simplicity: of operation, particularly arrangedforY travelingiand cutting where the track I gauge is narrow,v where theradius of .the curves of the tracks is relatively short, and where the:coal seams are-,of arelatively steep pitch.

fMy invention may bei more clearly Vunderstood vwith reference to theaccompanying ydrawings in which: l Y' Figure.' 1 is a top-plan viewfofone embodiment of my inventionwith parts broken awayand in sectionl tomore' clearly -show the detailstthereof; FigureZ- is-a side elevationfofthe device shown vin `Figure l, lwith the cutting mechanismshown l insubstantially longitudinal section;

-Figure l3 is' an "enlarged partial i fragmentary '.251 plan view of therearward portion :of the device 'shown in Figure 1, with parts brokenaway.- and rin section to more clearly show the details `of the f i feedmechanism; l

` Figure 4' is y `an enlargedA side'Y elevation of the f. device shownin Figure `1, with-parts broken away and in section to show certaindetails .of Ithe feed mechanism,v not shown in FigureS;

'Figure 5 is a transverselsectional vewfofy the rearward portion of lthedevice shownin` Figure 1, showing certain details of the. feed. andtruck driving mechanism,v notshown in vFigures 3 vIandli; I

Figure-'6 is an enlarged.` detail' view showing fthe details `of lthemeans for controlling theop- =eration of one of the feed '.drums; and

vFigure'l is-a'diagrammatic view showing the method .employed forcontrolling the movement of vthemachine `along a'relatively steep grade.Like reference characters refertoilike `parts "throughoutthe variousgures l 'Referring now. in'` particular tothe drawings iandoneembodiment of my invention, a-truck` I0 *is providedwhich isv mounted ontrack wheelsl I I, f IIfand axles I2, I2. vTnetruck IUis soarrangedthatitslwheel 'base is relatively short for/the 1 negotiation of sharpturns-and is aJsoso-arf ranged that itvmay 'bereadily adapted. for nar-;roW-'track gauges.

"Agcutting.l element I3 is mounted on theitruck 'ffl-0f and lfprojectsforwardlyiand' .rearwardly there- :from,;and:.-.includes alongitudinally disposed .fino- :tori I4,.;a fcutter. frame section ll 6disposedeffor- :wardly oand .securedto `itheiorward end of vsaid .motorI; and a t feedingsectionj: I 1 A. disposed ,rear- -Iwardlylofiandzsecured to therearwardfend of f5 .saidV motor.r I I l'The cutterframe section'- IBprovides a pivotal support .forlacutter bar I8;.havinga cutterfchain yI9 'movablel'thereabout The cutter barl I8is -mounted ona. cutter-bar. SuppOrtingfmemberf. 20, .10 .-iwhich cutter '.barsupporting member in turn .is I Ipivotally:mounted-in` the cutter framesection. :I 6 :.for pivotalfmovement. with respect theretoabout vla,verticaljaxisin. a` manner .which will not ,hereini besdescribedrindetail sinceiIit is no Aportion .of-5.15

my present invention. I I

I A Ipinion 2| isnsecured -to theforwardfendpf .the shaft .-for themotory I4 and lmeshesxwithand drives a spurgeargfZZ- on fthefrearwardendbf a y ;,;shaft'-;23. `A bevel pinionf24 .is freely mounted'onczofthe-forward end ofthefshaft. 23` and .isselectively I .connectibletherewithfbyfmeans ofxa clutch mem- 'I1 ber;25.1in .1an usual Imanner..The bevelxpinionjZ y.meshesf-.withfand drivespa. bevel geareZ'l securedato the IIupper, end of aI vertical shaftnf-ZB. which 25 sha-ft.' isjournaled inthe cutter f frame section I 6 i by meansofballzbearingsin,af.usual manner. JA

. sprocket29riis 'keyed to Ithelowerend yof thefvertical shaft 28 andmeshes with and drives thecut- I ter chain: I 9.7i in` a closed. orbitalpath Iabout. the .n30

ccutterbarII.

Referringinowiinr particular toI the 1 details: of ,thetfeedingvsection'I 'l Aand l.the meansxfor4 swing- .:Iing :the cutter "Ibar I I8 about.the Aaxis *IofIz-th'e '..sprocket 29 1andffeeding said cutter barfin..yanl35 arcuate:l pathiacross .the coal face,..a .pair offeed .'I' drums30;*3,.hereinshown asbeing coaxiallyar- .I rranged, are .provided f'IThef feedv .drums y, 30,1 IJ

are arrangedadjacent opposite sidesofthe -ieed-v f ing- 4sectiorr rI land :motor I 4 and -are..j.ournaled.s40 i on: eccentric; 'members-p 3 I,13 I The members 3 I, 43l in turn are -journaled-eccentrically of i.their .centers on .sleeves 32, I 32, g which'. sleeves infturn arefreely mounted onr ,transversely extending Ashafts., 33, 33. n i

Aflangek extends inwardly fromeach feed I, drum 30y and has `aninternalgear 36, keyed Ito -.the .inner peripheryy thereof. A Ibrakeband f 31 is adapted toengage the outer periphery of the "'ange 35 vforholdngthefeed drum 30'fro1`n rota-@P50 tion when desired.

*Pinions 39," 39r on theouterends of coaxiallyarrangedhorizontalshafts-40,10 are-adapted vto i meshfwithfanddrive the internal gearsA36, 36. '1i-The pinionsV 3952-39 f are engaged 'Y witlif-orA disen-i 5gaged from the internal gears 36,- 36 by means of the eccentric members3|, 3|. A member 4| having arms 42` extending outwardly therefrom issecured to the outer end of each shaft 33. The arms 42 of each member 4|are adapted to engage suitable grooves formed in the outer face of eachmember 3| so that rotation of either of the shafts 33 will cause pivotalmovement of the respective eccentric member 3| for shifting the internalgear 36 into engagement with or disengagement from the respective pinion39. An operating lever 43 is keyed to the inner end of each shaft 33 forpivotally moving said shafts and moving the drums 36 about axeseccentric of their center for selectively connecting thev feed dl'ums30, 30 with the motor |4. The operating levers 43, 43 may be locked tohold the internal gears 36, 36 in mesh with or disengagement from thepinions 39, 39 by means of any suitable arrangement (not shown).

Suitable flexible feeding members, such as flexible cables 44, 44 areadapted to be wound on the feed drums 3U, 39 and their free ends areadapted to be connectible with a connecting member y45 secured to and.extending upwardly from the cutter bar support member 29 (see Figure 1);It is thus apparent that when one feed drum30 or the other is driven bypower from the motor |4, that the cutter bar IB may be pivotally movedin one direction or another for feeding the cutter bar |8 in an arcuatepath across the front of-.the truck I0. Either of the feed. drums 30, 3Dmay be power driven at the same time in a manner which will hereinaftermore fully appear, or one of said feed drums may be power driven whilethe other drum may be retarded by means of `the brake band 31 undercontrol of theloperator.

Referring now in particular to the means for independently driving thefeed drums 30, 30 from the motor I4, an armature pinion 41 is keyed onvthe rearward end of the shaft for the motor |4. yThe armature pinion 41meshes with and drives a spur gear 48 secured to the forward end of alongitudinally extending shaft 49. The longitudinally extending shaft 49is journaled` in a bearing support member 59 on suitable ball bearings,which bearing support member 561s in turn detachably secured to theframe for the feeding section' |1.

A worm is formed integral with the longitudinally extending shaft 49intermediate its supporting bearings'in the bearing support-member `5|)andmeshes with and drives a worm gear 53 secured .to a sleeve 54. Thesleeve 54 is journaled on:its .outer periphery in suitable ball bearingsheld in the lower portion of the feeding section |1.`

in suitable bearing supports in a usual manner and has spur gears 55, 55formed `integral with its outer ends. The spur gears 55, 55 formdrivingmembers or sun gears for planetary geared reduction devices 56,56 arranged coaxially-with the shafts 40, 48 for driving said shafts andthe pinions 39, 39 at either high or low frictionally controlled speedsindependently of each other.

Inasmuch as the construction of the twoy planetary gear reductiondevices Y56, 56 is similar, the

6|, which spider in turn is keyed to the shaft 40 for driving saidshaft.

The cage 59 is provided with a flange 63, vwhich extends outwardly fromits inner side and which is adapted to be engaged by a friction band 64for holding said cage from rotation or permitting said cage to rotatelunder the control of said friction band. An internal gear 65 isjournaled on the inner periphery of the flange 63 of the cage 59 forrotation with respect thereto and meshes with the planetary pinions 51,51. A flange 66 in formed integral with the internal gear 65 and isdisposed adjacent the flange 63 of the cage 59 and its inner peripheryencases the outer periphery of the internal gear 69. A friction band 61surrounds and engages the flange 66 for holding the internal gear 65from rotation or permitting said internal gear to rotate under thecontrol of friction.

The friction bands 64 and 61 are controlled by means of a hand wheel 68disposed adjacent the rearward end of the feeding section I1 and keyedon the rearward end of a shaft 69 journaled in Vthe feeding section |1,and extending angularly upwardly from said hand Wheel. An operatingmember 16 is threaded on the shaft 69 for translational movement withrespect to the hand wheel 69 upon rotation of said hand wheel. Theoperating member is provided with voppositely extending lugs 1| and 12.The lug 1|` is adapted to engage a lug 13 extending upwardly from oneend of the friction band 64, while the lug 12 is adapted to engage a lug14 extending upwardly from one end of the friction band 61. `Lugs and 16extend upwardly from the opposite ends of the friction bands 64 and 61respectively, and are adapted to respectively engage suitable stopsformed integral with and extending, downwardly from the top cover of thefeeding section |1. t

It should be noted with reference to Figures 3 and 6 that the lugs 1|and 12 extend outwardly lin opposite directions from opposite ends ofthe member 10 so that when the hand Wheel 69 is rotated in onedirection, the friction band 64 may be engaged with the flange 63 forholding the cage 59 from rotation while the friction band i 61 ispermitted to be disengaged from the flange 66 formed integral with theinternal gear 65, and when rotated in an opposite direction the internalgear 65 may be heldr from rotation permitting the cage 59 tobefree torotate.

When the cage 59 is held from rotation by the friction band 64, theinternal gear 60 ywill be driven through the sun gear 55, planetarypinions 51 and planetary pinions 62, which will rota-te the shaft 40 ata relatively high rate of speed. When the internal gear 65 is held fromrotation by the friction band61 and the cage 59 is free to rotate, theinternal gear 68 will be driven through the spur gear 55 andplanetarypinions 51 and |52,V moving in an orbital path about the internal gear65, at a relatively slow rate of speed. It may thus be seen that eachofA the feed drums 30, 30 may beselectively driven from` the motor- |5at either a high or low frictionally controlled speed,l controlled bythe hand wheels 68, 68. During normal operation it is only necessary toturn the hand wheels 68, 68 in one direction or another to control thespeed of rotation of the feed drums 36, 30.

permit said feed drums to freely rotate, independently of the planetarygear reduction devices 56, 56. While the planetary ,gear reductiondevices- When desired, however, the .feed drumsf' 30, 39 may bedisengaged from the drivelpinions `39, 39 byr means of theoperatinglevers 43, 43 vto formed integral with la l tionf, of 1 the lofi saidfee'dxdrums as .1afiretardingsfdevice,L it is preferable'vf, to'v useI,thezzbrakelgbandsi 31 tOJr'etard rotation: ofthe desi-red feed adrum,Asaid feed/drum rlbeingldisconnected'. fromtherespective:planetaryiageared reductionl device .56,1when beingsol re- 4tarded by` means ofthe respectiveioperating'lever Yin* order. to` relieve alli-internalstrains from said planetary rgear reduction devices.` I

' .Witl'rfreference: vnow* inr particular tosthe ,truck cdrivean'd the.auxiliary-` meansk for .propelling the f y truck when movingorcutting-...along a pitching f seam, a windingv .drum1'19 is journaled`on -a shaft @80 -supportedcatlits endsin aportion 8| de:wpendingzfrom'the rearward portionbf the feedling: sectionk i simeshedwith 'a vspur .pinion 84 freelyffmounted Ona .transverselyextendingshaft .85 journaled e fthe cutter barhas been sumped into the'coal, themachine isheld at a stationary position with l:atits ends in thedepending portion 8| of the afeeding'sectionvl'l; Ahub'til of the spurpinion i184' vis journaled in thefdepending portion 8| and has clutchjaws B1, 81 extending from-itsiouter -end,rada1')tedfv to :beengaged byclutch-jaws 88 clutch .member eredon the transversely extending shaft85for selectively driving said` spur pinion and the wind- .ing drum 19fromusaidshaft;The transversely extending shaft'i in turn is drivenfromthe Y shaft 40 von the left hand :side ofthe machine,

-when looking towards thecutter barr 8, by means said shaft, an idler lof a spurgear 9D keyed lon f. gear `9| driven therefrom and a spur gear`92 `meshing with said idler gear andv keyed on saidy shaft. Thus thewinding i, yfrom oney planetary gear transversely extendingy drumv 19may be driven reductiondevice 56`at either a high or low fricvtionallycontrolled speed simultaneously'hor in-V depen'dently'of rotation of thefeeddrunisS, 3m

A sproclret93 is-freelymounted ont the Aright *hand outer end ofthe-transversely'fextending f shaft 85j `'lhesprocket93f-isl`-j`ournaledfon-its 'hub i.in-- the- 'depending portion 8 l'iand`its-inner y end has Vclutch jawsf94 formed fintegral'ftherea "with,which are adaptedto beiengaged by clutch rmounted on wheels and axles,

r bar proj ecting 'jaws' 95 .formed tintegral f with a clutch memberw96.` feathered on the transversely extending shaft 85 for selectivelydriving said sprocketfrom/said shaft. vThe)spirockeif 93is operativelyconnected with the rearward truck wheels by means of a chain andsprocket drive generally indicated by reference character 91, while thefor- Ward and rearward truck wheels are connected together by means of achain and sprocket drive, generally indicated by reference character 98.The truck may thus be driven at either a high or low frictionallycontrolledspeed independently of rotation of the winding drum 19 andindependently of rotation of the feed drums 39, 3D. i c 'I'he windingdrum 'I9 is adapted to have a flexible feeding member such as a flexiblecable 99 securedthereto at one of its ends. The flexible cable 99 mayextend rearwardly from thev 1 to- :be lowered vdown said` winding drum,"winding drum :being controlledA :byV the: planetaryygear'reductiondevice 5.6. f

rA spur gear'nissecured to one of thefflangesof thewinding fdrum 19rand.is

vtuated eitherr by the winding rdrum Iformin which the .be embodiedlwish vposed rearwardly of guidel sheaves IDI, 1|0| to a jack. |02interposed incline, or for. permitting-,the fmining machine 1an inclineunder control of .thefspeed of rotation of said Duringv thecuttinguoperation the, mining vmal 1 l0 cliiner-is usually held in astationary position with respect to the track by means of ysuitablejacksv interposed between the machine. .and the rmine roof orrmineentirely'. by arcuate `i8. In casesvwhere rnarrovvthe cutterbar may' besumped intov the bottom, the lrerf beingfcut the entries areY relativelycoal by. movement of the truckalong a track .ac-

19, or'both theftrack-wheels and'saidwinding drum.v *After* roflaconflpactforrn and yet loe eflicient andflexible in operation; that anew and improved means movement of the cutter bar 1 that a new and`improved-Q5 isprovided foriindependently driving` the i'eedf'130 drumswhich means alsoservestoeifect independent operation ofy a third drumandthe wheels for supporting the truck, which drum and'wheels are drivenat aV speed similar to the speed of `rotation of the feeding drums,l andthat? the fdevice `of my invention is so `arranged that itisparticularly adapted for use inmines'hav- 4,ing pitching seams andrelatively steep grades.

While I have herein shown and described .one

it to be understood that I dognot desire to be llimited .to the precise`details orform of-construction shown herein, excepting asy itmay belimited in the appended claims.

1; I, claim as my invention: Y i

l. In a track-mounted miningmachine, a truck a motor, a cutter forwardlyof said truck `and mounted for pivotal'movement abouta vertical f kdrumsdisposed rearwardly of and at opposite sides of said motor and a thirdfeed drumdissaid rst-mentioned feed drums and selectively driven fromsaid shaft.

device of rny-'invention mayz40 ,axis. disposed forwardly of said truck,means`=50 2. In a track-mountedv mining machine, a truck mounted onwheels and axles, a motor, a cutter l bar projecting forwardly of saidtruck and mounted for pivotal movement about a vertical axis disposedforwardly of said truck, means driven by said motor for driving saidtruckincluding a transversely arranged shaft driven from said motor ateither a high or low speed and a selective connection between saidshaftand truck Wheels, and feeding mechanism therefor comprising a pair ofcoaxially arranged feed drums disposed rearwardly of and at oppositesides of said motor, and a third drum disposed rearwardly of and betweensaid iirst-mentioned drums and selectively driven from said shaftindependently of said truck driving mechanism.

fio

- ed for `pivotal 3. In a track-mounted mining machine, a truck lmounted on wheels and axles, a motor, a cutter bar projecting forwardlyof said truck and mountmovement about a vertical axis disposed forwardlyof said truck, means driven by said motor for driving said truckincluding a shaft driven by the rearward end of said motor and arrangedfor `rotation about a transverse axis, a shaft parallel thereto anddriven thereby and a selective connection between said last-named shaftand truck wheels, and feeding mechanism therefor including a pair ofcoaxially arranged feed drums disposed rearwardly of and at oppositesides of said motor, each of said feed drums having a flexible feedingmember having operative connection with-said cutter bar for swingingsaid cutter bar in opposite directions without reversal of said motor,and a third winding drum disposed rearwardly of and betweensaidfirstmentioned drums and selectively driven from said last-namedshaft independently of said truck driving mechanism for moving saidmachine along the track at a high or low speed independently of or incooperation with said truck driving mechanism.

4. In a trackmounted mining machine, a truck mounted on wheels andaxles, a motor, a cutter bar projecting forwardly of said truck andmounted for pivotal movement about a vertical axis disposed forwardly ofsaid truck, means driven by said motor for driving said truck includinga planetary geared reduction device, a shaft driven thereby and aselective connection between said shaft and truck wheels, feedingmechanism therefor comprising a pair of feed drums disposed rearwardlyof and at opposite sides of said motor and a third feed drum disposedrearwardly of and beneath the axis of rotation of said first-mentionedfeed drums, and means for driving said feed drums from the rearward endof said motor `comprising a planetary geared reduction device coaxialwith said first-mentioned planetary, a selective connection from saidplanetary to one of saidffeed drums, a selective connection from saidfirst-mentioned planetary to said other feed drum, and a selectiveconnection from said shaft to said third feed drum.

'l 5. In` an apparatus of the class described, a track-mounted truck, `amining machine thereon including a motor, a cutter bar disposedforwardly motor, a planetary geared reduction device arranged on eachside thereof and driven thereby, selective drive connections from saidplanetaries to said drums including a pair of coaxially arrangedtransverse sh'afts, a third winding drum rotatable about a transverseaxis disposed rear-` wardly of the axis of rotation of said shafts,truck driving mechanism, and means for selectively driving said thirddrum and truck driving-mechanism from one of said shafts including aparallel shaft driven by one of said coaxial shafts, a selectiveconnection from said parallel shaft to said winding drum and anotherselective connection from said parallel shaft to said truck drivingmechanism.

6. In a track mounted mining machine, a truck mounted on wheels andaxles, a motor, a plvoted cutter bar projecting forwardly of said truck,a pair of feed drums disposed rearwardly of said motor adjacent oppositesides thereof for rotation about coaxial transverse axes, means drivenfromsaid motor for independently driving said feed drums including apair of independently operable coaxial planetary gear reduction devices,said planetary gear reduction devices being arranged for rotation abouta horizontal axis extending transversely of said motor and each of `saidplanetary gear vreduction devices having drive connection with one ofsaid feed drums, a third winding drum for driving said truck along themine track, disposed rearwardly of said feed drums forrotation about anaxis disposed parallel to .theaxis of rotation of said feed drums, ashaft disposed beneath said feed drums and being driv- .en from one ofsaid planetary geared reduction devices, a selective drive connectionfrom said shaft to ksaid third winding drum, and another selective driveconnection from said shaft to said truck wheels. y

FRANK A. LINDGREN.

